The mailing list for listmasters using Sympa

["stefano.antonelli@cnaf" <address@concealed>]

Dear All,

we have happily (:-)) upgraded to sympa 6.2.48 but we are facing this 
problem:

some, many, messages from alarm, monitoring systems arrive to mailing 
lists without Message-ID field in the header and are moved to 
/var/spool/sympa/msg/bad. Moving these mails to /var/spool/sympa/msg 
doesn't solve the problem.

At the moment, we've not been able to bypass this problem; is there a 
way (scenario, list configuration, etc.) to change sympa behaviour?

thank you
cheers
Stefano